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Hey Greg (sorry for the hijack Roland). At 656nm (Ha) the16803 is 45%Qe and the 6303 is 65%. ok there's not much in it for lrgb as you say,But for me that makes the 6303 more attractive for NB, it's the difference ( roughly) between a 16 and 20" aperture for the same image result.
The 16801 on the other hand peaks at 68% Qe (nabg version) at Ha, which is very interesting, but much more expensive. I can't find any astroimager user pics, mmm, wonder why ?.
Another thing, the 16803s dark noise is 0.08e at -35c, but the 6303 is 0.0005e at -45c, several orders of mag lower, yet I often hear the 6303 is a noisy chip? Thats got me stumped, unless the cooling on the SBIG is the problem, in which case the FLI then becomes far more attractive with deeper cooling, what do you think?.
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